When you enter a URL into a tweet, Twitter uses their own in house URL shortener on the t.co
domain to turn it into something smaller and track usage.
My site has recently been Tweeted by somebody popular (several thousand extra hits in one day) and it appears the referrer for this influx is a t.co URL.
How can I find what Tweet contained that URL?
Searching for the URL or it's parts on both Twitter and Google have turned up nothing.
Best Answer
(An answer by Arne Roomann-Kurrik (@kurrik), Developer Advocate at Twitter, on Twitter Dev forums.)
Source.